An item with the combined functions of a FREQUENCY DIVIDER and a FREQUENCY MULTIPLIER. It provides a multiplicity of discrete output signals harmonically related to a standard source frequency, that may be utilized in radio receivers, transmitters, musical instruments, test equipment, density of rapidly selectable individual communication frequency bandwidth. See also GENERATOR, REFERENCE SIGNAL. Excludes FREQUENCY DIVIDER; FREQUENCY MULTIPLIER; and KEYBOARD INSTRUMENT, ELECTRONIC.